Convert Account ID to SteamID3
Paste a Account ID below to get the SteamID3 straight away. The conversion runs in your browser, so nothing is sent anywhere and there is no sign-in.
Example: 52079950 converts to [U:1:52079950]
How the conversion works
Both formats describe the same underlying account, so the conversion is arithmetic rather than a lookup. Every Steam identifier is built from one 32-bit account number, and the route from Account ID to SteamID3 goes through it:
- Start with the Account ID. It is already the account ID; nothing to do. For
52079950that gives an account ID of52079950. - Build the SteamID3. Wrap the account ID as [U:1:accountID]. That produces
[U:1:52079950].
Worked example
| Step | Value |
|---|---|
| Account ID in | 52079950 |
| Account ID | 52079950 |
| SteamID64 equivalent | 76561198012345678 |
| SteamID3 out | [U:1:52079950] |
What a Account ID is
The bare 32-bit account number underneath every other format. Strip away the base offset and the textual wrapping and this is what remains — the actual identity.
The Dota 2 match history API uses it, several match-history and stats sites key on it, and it is the number shown in a Steam friend invite code. It is also the value you want if you are storing IDs compactly, since it fits in 32 bits.
What a SteamID3 is
The current textual format, written [U:1:X], where U marks an individual user, 1 is the universe, and X is simply the account ID with no bit-splitting. It is the cleanest of the textual formats because X is the raw number.
Modern Source and Source 2 servers report this in the console status output, CS2 demo files use it, and newer SourceMod builds emit it. If you copied an ID out of a server console in the last few years, it almost certainly looked like this.
Converting more than one ID
This page handles a single ID at a time. To convert a whole list at once — a ban file, an admin config, a spreadsheet column — use the bulk converter, which accepts mixed formats and custom profile URLs in the same paste.